5s7t-7+9s+4t-6
9X-5Y-9X-6Y+10
5X2-3Y+8X2-6X+4Y
i DON'T UNDERSTAND
Those are all expressions. What are you instructed to do with them?
It looks like you have provided three different expressions. Each expression consists of a combination of variables (like s, t, X, and Y) combined with various arithmetic operations (like addition and subtraction).
To simplify each expression, we can combine like terms. Like terms are terms that have the same variable(s) raised to the same power(s). Let's simplify each expression step by step:
Expression 1: 5s7t-7+9s+4t-6
To simplify this expression, we need to combine the like terms. However, we need to note that the term "5s7t" is written in an unconventional way. The conventional way is to write it as "5st7" (dropping the multiplication sign). So, rewriting the expression in a conventional form, we have:
5st7 - 7 + 9s + 4t - 6
Now, we can combine the like terms:
Combining the s terms: 5st7 + 9s = (5st7 + 9s)
Combining the t terms: 4t = (4t)
Combining the constant terms: - 7 - 6 = (-13)
So the simplified expression is:
5st7 + 9s + 4t - 13
Expression 2: 9X-5Y-9X-6Y+10
To simplify this expression, we need to combine the like terms. Let's group the like terms:
(9X - 9X) + (-5Y - 6Y) + 10
Combining the X terms: (9X - 9X) = 0 (the X terms cancel each other out)
Combining the Y terms: (-5Y - 6Y) = (-11Y)
So the simplified expression is:
-11Y + 10
Expression 3: 5X2-3Y+8X2-6X+4Y
To simplify this expression, we need to combine the like terms. Let's group the like terms:
(5X2 + 8X2) + (-3Y + 4Y) - 6X
Combining the X^2 terms: (5X2 + 8X2) = 13X^2
Combining the Y terms: (-3Y + 4Y) = (Y)
Combining the X terms: -6X = (-6X)
So the simplified expression is:
13X^2 + Y - 6X
I hope this explanation helps you understand how to simplify these expressions! Let me know if you have any further questions.